Hey there, I was right there with you about a year ago. Couple years ago I easily read through 50 books in a year, then right at the end of college I couldn’t even begin one. After 3 years being out, I finally finished a couple books in less than half a year.
What helped is reading something easy and fun. Hitchhiker’s guide to the galaxy was it for me. Nowadays I’m doing therapy as well, which helps. I’m nowhere near as voracious a reader as I once was but I’m a different person than I was years ago, so that’s fine.